(2-Methylpyridin-3-yl)boronic acid hydrochloride is widely used in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions. This reaction is essential for forming carbon-carbon bonds, enabling the construction of complex organic molecules, including pharmaceuticals, agrochemicals, and advanced materials. Its boronic acid group acts as a key reagent, facilitating the coupling with aryl or vinyl halides in the presence of a palladium catalyst. Additionally, it is employed in the development of bioactive compounds and drug intermediates, where its pyridine moiety contributes to enhancing molecular interactions and stability. The compound is also utilized in medicinal chemistry research for designing and synthesizing potential therapeutic agents.